package algorithm;
import java.util.Arrays;
public class Example {
        String str = new String("good");
        char[] ch = {'a', 'b', 'c'};

        public static void main(String args[]) {
            Example ex = new Example();
            ex.change(ex.str, ex.ch);
            System.out.print(ex.str + " and ");
            System.out.println(Arrays.toString(ex.ch)); // 正确打印数组
        }

        public void change(String str, char ch[]) {
            str = "test ok";
            ch[0] = 'g';

    }
}
